Location History:
- Kouza-gun, JP (2008)
- Chigasaki, JP (2011)
Company Filing History:
1 out of 33,490 
1 out of 100 
1 out of 2,467 
Years Active: 2008-2011
Title: Shigehisa Kurogo: Innovator in Piezoelectric Technology
Introduction
Shigehisa Kurogo is a notable inventor based in Chigasaki, Japan. He has made significant contributions to the field of piezoelectric technology, holding two patents that showcase his innovative approach to improving frequency stability in oscillators.
Latest Patents
Kurogo's latest patents include a voltage control type temperature compensation piezoelectric oscillator. This invention features a voltage control type oscillation circuit, an automatic frequency control (AFC) circuit that outputs a control voltage for adjusting the oscillation frequency, and a temperature compensation voltage generating circuit. The gain variable circuit in this oscillator varies the gain of the temperature compensation voltage, allowing for precise control of the oscillation frequency. His other patent addresses the deterioration in frequency stability over time in conventional piezoelectric oscillators. By utilizing a P-channel or N-channel transistor type as a MOS capacitance element, Kurogo has improved the stability of these oscillators, eliminating instability issues associated with time.
Career Highlights
Throughout his career, Kurogo has worked with prominent companies such as Seiko Epson Corporation and Epson Toyocom Corporation. His experience in these organizations has allowed him to refine his skills and contribute to advancements in technology.
Collaborations
Kurogo has collaborated with notable colleagues, including Masayuki Ishikawa and Atsushi Kiyohara. Their combined expertise has likely fostered innovative solutions in their respective fields.
Conclusion
Shigehisa Kurogo's work in piezoelectric technology exemplifies the impact of innovation on engineering and electronics. His patents reflect a commitment to enhancing frequency stability and performance in oscillators.